Please read our Tech-Sit on fitting gear boxes before you fit your MB 5 speed.

http://www.mbscooters.co.uk/info/mb-*-setting-up-instructions/setting-up-*-gearbox+291.html

Technical

2017 onwards

50/10 1st
41/12 2nd
38/15 3rd
37/18 4th
36/20 5th

2017 onwards top gear ratios

15 x 46 - 5.52:1 80 link chain normal up chain guides

16 x 46 - 5.18:1

17 x 46 - 4.87:1 81 link chain normal up chain guides

18 x 46 - 4.60:1

19 x 46 - 4.36:1 82 link chain normal up chain guides

20 x 46 - 4.14:1

21 x 46 - 3.94:1

15 x 47 - 5.64:1

16 x 47 - 5.29:1

17 x 47 - 4.98:1

18 x 47 - 4.70:1 82 link chain normal up chain guides

19 x 47 - 4.45:1 82 link chain normal up chain guides

20 x 47 - 4.23:1

21 x 47 - 4.03:1

(Before 2017 small batch)

(50/10 1st)

(41/12 2nd)

(38/15 3rd)

(37/18 4th)

(34/19 5th)